Chemical Stability of (Ag,Cu)2Se: A historical overview

David R. Brown, Tristan Day, Thierry Caillat, G. Jeffrey Snyder

Research output: Contribution to journalArticlepeer-review

150 Scopus citations

Abstract

Recent work on Cu2-x Se has caused strong interest in this material due to its high reported peak zT (1.5) and the reduction of thermal conductivity through the mechanism of liquid-like suppression of heat capacity. In the 1960s, 3M patented Cu1.97Ag0.03Se as "TPM-217." Over the following decade it was tested and developed by the 3M Corporation, at the National Aeronautics and Space Administration (NASA) Jet Propulsion Laboratory, Teledyne Energy Systems and the General Atomics Corporation for use as a next-generation thermoelectric material. During these tests, extreme problems with material loss through Se vaporization and chemical reactions between the material and the device contacts were found. These problems were especially severe while operating under conditions of high iL/A. As a result, the material system was abandoned. The results of these reports are discussed. A simple test of degradation of Cu2Se under conditions of applied current and thermal gradient was performed and showed results compatible with the work done by General Atomics.

Original languageEnglish (US)
Pages (from-to)2014-2019
Number of pages6
JournalJournal of Electronic Materials
Volume42
Issue number7
DOIs
StatePublished - Jul 2013

Funding

D.R.B. would like to acknowledge the support of the Resnick Institute. T.D. and G.J.S. would like to acknowledge the support of the Air Force Office of Science Research. Part of this work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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